Former President Obama says it was a major "screwup" of his administration that he failed to honor Dolly Parton with the Presidential Medal of Freedom.

"That's a mistake. I'm shocked," Obama said Monday on CBS's "The Late Show" after host Stephen ColbertStephen Tyrone ColbertCan the GOP break its addiction to show biz? Colbert asks Republicans 'have you had enough?' in live show after Capitol violence Late-night hosts announce plans to discuss Capitol violence MORE asked how it was possible the "9 to 5" singer hadn't received the country's highest civilian award.

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"Looking back at your eight years, do you realize that's the mistake you made?" Colbert asked with a laugh.

"Actually, that was a screwup," Obama, promoting his new memoir, "A Promised Land," replied. "I'm surprised. I think I assumed that she had already gotten one, and that was incorrect."

"She deserves one. I'll call Biden," Obama said of the president-elect.

During his eight years in office, Obama bestowed the Medal of Freedom on dozens of public figures and musical artists, including Bob Dylan, James Taylor, Stevie Wonder, Diana Ross, Gloria Estefan and Barbra StreisandBarbara (Barbra) Joan StreisandAIDS activists recruit Barbra Streisand for surprise Fauci birthday party on Zoom Obama says Dolly Parton not getting medal of freedom was 'screwup': 'I'll call Biden' Celebrities mourn Ginsburg, call for voters to act MORE, among others.

While 74-year-old Parton has been lauded with countless awards over her decades-long career — including as a National Medal of Arts recipient in 2005 and celebrated at the Kennedy Center Honors in 2006 — the Medal of Freedom hasn't been one of them.

A Parton spokesman didn't immediately return ITK's request for comment about Obama's remarks.